4994
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8208
- Proper Divisor Sum (Aliquot Sum)
- 3214
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2260
- Möbius Function
- -1
- Radical
- 4994
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 90
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of glycols with n carbon atoms.at n=9A000634
- Coordination sequence T2 for Zeolite Code MFI.at n=45A008165
- Coordination sequence T6 for Zeolite Code MTT.at n=43A008194
- Numbers k such that phi(k) | sigma_14(k).at n=18A015773
- Expansion of 1/((1-x)*(1-10x)*(1-11x)).at n=3A016265
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 70.at n=7A031568
- Palindromes that start with 4.at n=21A043039
- Palindromic even lucky numbers.at n=19A045960
- Largest palindromic substring in 8^n.at n=39A046266
- Palindromes with exactly 3 prime factors (counted with multiplicity).at n=36A046329
- Palindromes with exactly 3 distinct prime factors.at n=21A046393
- Palindromes expressible as sum of 2 consecutive palindromes.at n=45A046497
- Number of asymmetric Greg trees.at n=13A052303
- a(n) = (s(n)-(n mod 2)) / n where s(n) is A006533.at n=51A056891
- a(n) = (n^3 + 5*n + 18)/6.at n=33A060163
- Geometric mean of the digits = 6. In other words, the product of the digits is = 6^k where k is the number of digits.at n=31A061429
- Largest number of crossing-free Hamiltonian cycles of n points in the plane.at n=7A063546
- n sets a new record for the number of integers k such that n = k + reverse(k).at n=21A067035
- Palindromic integers > 0, whose 'Reverse and Add!' trajectory (presumably) does not lead to another palindrome.at n=0A070001
- Palindromes with successive increasing difference: a(k)-a(k-1) > a(k+1)- a(k).at n=28A071250